hi all, new around here. just got an 2002 xr 250. it is a mother to start. no manual for it. i know there is a trick, just like there was for my 85 atc350x. when do i use the decompression lever or not? the atc 350 was automatic in this regard. it is all stock. also what is procedure if it floods? thanks! i already got the baja designs baffle and uni filter. what a difference!